Firearm.



J. B. & A; HAMILTON.

FIREARM. APPLICATION FILED MAY 3. ISIS. RENEWED NOV. 5. I911.

1,269,1 78. Patented June 11, 1918.

2 SHEETS-SHEET I.

J. B.'& A. HAMILTON.

FIREARM.

APPLICATION FILED MAYS. 1916- RENEWED NOV. 6. I911- Patented J une 11, 1918.

2 SHEETSSHEET 2 James a. mmm'oiv, or nonoxnn,

ND .ALSTON HAMILTON, F SANDY HOOK, NEW

JERSEY.

, FIREARM.

Application filed Bay 3,1918, Serial No. 95,287.

' To all whom it may concern:

. Be it known that we, JAMES B. HAMIL- TON and Arsron Hammron, citizens of the United States, and residents, respectively, of

Hoboken, in the county of 'Hudson and State of New Jerse and of Sandg Hook in the county of enmouth and tabs 0 New Jersey, have invented a new and useful Improvement in Firearms, of which the following is a specification.

Our invention relates to improvements 1n firearms and is particularly adapted to arms, such asshoulder arms and machine The ob'ect'of our invention is to provide a depresse stock for firearms so as to bring the head of the operator into a protected position, an altiscopic sighting tube being employed. 1

Means are provided to adjust the sighting tube for a given range of the firearm-s0 that the firearm will be brought automatically to the proper elevation for that particular range when the operator brings the object into view through the sighting tube. This permits the elimination of the usual si hts on the gun barrel.

eans are also em loyed for removably attaching the altiscopic sighting tube to the stock so that the sighting tube may be readily removed and replaced.

A. practical embodiment of our invention is represented in the accompanying drawings, in which- Figure 1 represents a firearm in side elevation with our improvements apphed thereto, the" sighting tubebeing shown in full lines in its adjustment for the longest efiective range of the firearm and the front end of the sighting tube being shdwn 1n dotted lines adjusted to the point 'blank range of the firearm, 1-

Fig. 2 represents an enlarged vertical longitudinal section through the parts embodying our invention,

Fig. 3 represents a detail section taken in the plane of the line III-III of Fig. 2,

'Fig. 4 represents a transverse section taken in the plane of the line IV-IY of Fig. 2,

Fig. 5 represents a transversesection taken in the plane of the line VV of Fig. 2, and

Fig. 6 represents a detail transverse sectifoii taken' inthe' plane of the line VI-VI 0 20' ,The barrel 1 and its loading and firing Specification of Letters Patent.

Patented June 11, 1918.

Renewed November 6, 1917. Serial No. 200,643.

hand grips 4 and 5, for facilitating the handling of the firearm.

The altiscopic sighting tube 6 is provided at its inner end with the'oppositely arranged threaded trunnions 7, 8, engaged by clamp ing screws 9, 10, for removably hingmg the sighting tube to the stock casing. The altiscopic sighting tube is rovided with an eye piece 11 at its inner en and its outer end 12, extends forwardly along the firearm at a point above the barrel 1, the intermediate portion of the tube extendingdiagonally upward and forward alon the top of the stock casing. The free or out end of the sighting tube is swung to different positions for diiferent ranges by the following mechanism: A cross shaft 13 is suitably mounted in the stock casing, which shaft is provided at oneside of the stock with an operating hand wheel 14. Within the stock casing, the shaft 13 is provided with a bevel gear 15 which meshe with a bevel gear 16 carried by a rotary shaft 17 mounted in suitable bearings within the stock casing and extending upwardly and forwardly. This shaft 17 is also provided with a bevel gear 18 which meshes with a bevel gear 19 carried by a rotary shaft 20 also mounted in the stock casing and extending upwardly and rearwardly. This shaft 20 is provided with a screw 21 which engages the screw threaded Jsocket 22 of a. bar 23 slidably mounted within the stock casing. This bar has a yoke 24 which embraces the sighting tube 6 and this yoke is connected to the sighting tube by means of a pin and slot connection 25, 26, the slots being elongated in the direction of the length of the sighting tube to permit the bar 23 in its; longitudinal movements to swing the sighting tube.

The mechanism above described permits of a very rapid and accurate adjustment of the. sighting tube to different ranges. v

To enable the operator of the firearm to elevate the barrel of the gun to the proper position for firing at an object at a certain given range without the use of other si hts than the sighting tube itself, we provi e a fixed range scale 27 on the side of the stock easing, along which scale a pointer 28 is fitted to travel. The pointer 28 is fixed to with a toothed segment 32, which meshes with a gear'33 fixed to the hand wheel shaft .13. --The relative movement of the range scale pointer 28 and the sighting tube, is such t at when the pointer 28 is moved by 1 the operation of the hand wheel 14 to a given range indicated on the scale 27, the s1ght- Y range,- which means is herein shown as com ling tube will be moved to such a position that when the operator brings the ject at such given range into VIGW' through the sighting tube, the barrel of the firearm will be elevated to the proper position for accurate firing at such given object. n

Means are rovided for securing the sight ingtube rigidlyin position at any given prisingfthe following elements: Two lugs 343-35, carried by. the sighting tube 6 pro jeotfdownwardly into the stock casing between the arms of clamps 36, 37, which clamps are, provided with ends 38, 39, the

end 39 having a screw threaded engagement m with' a crossbolt fiO suitably mounted in thestock, with-a han e .eil'for turning the bolt.

stock casing and rovided, exterior to the The turnin of the bolt in one direction wili clamp the ugs 34, 35, rigidly to the stock and the turning of the bolt in the opposite direction will release these lugs. It is de sirable'that the handle. 4-1 be located upon the opposite side of the stop]: from the hand wheel id-:forgmeady ma;21ipulation of the V V i P It will be seen that the sighting tube can be readilyfremoved frdm the stock'by unclampingv the two at the lugs 34:, 35, at the in and". slot connection25, 26, and at the runnions 7 and 8.

7 While we have shown the sighting tube as separable, so that the upper portion of the ,sighting'tube can be replaced if shot away or otherwise" ut out of commission, it is to-be understoo that the sighting tube may be made in anynumber of parts The depressed. stock and its altiscopic sighting tube may be readily applied to a firearm having any loading and firing mech anism", either whiie'incourse of manufacture or afterward, as may be necessary, thus rendering such firearm suitable for use where the same is to be used behind a parapet, an

embankment, armor plate, or other obstruction whereb head of the, user can be protected w ilethe barrel is in its proper position for fir g over said obstruction; I

v In use, theoperator of the firearm is given the rangeof'th'e object to be fired at. He immediately turns his hand wheel it to bring thepointer 28 to the given range on intense sighting tube to the stock in its the scale 27. This movement, at the same time, will swing the'altiscopic sighting tube to its proper angular position with respect to the barrel of the firearm. The tube may then be looked rigidly to the stock in this adjusted position by tightening the handle 41. The operator then finds the object through the sightin tube. When the object has been foun the barrel will have been automatically, elevated to the proper position for firing at such object at the given range.

Itis. obvious that cha" ges may be resorted to in the form, construction and arrangement of the several parts without departing from the spirit and scope of our invention;

and hence we do not wish to limit ourselves strictly to thestmcture herein shown and described.

What we claim isz 1. A firearm having a depressed stock and an altiscopic sightin tube hin "ed at its rear end to the stock an adj-ustab e to different ranges.

2. A firearm having a depressed stock and a removable altiscopic sighting tube hin ed at its rear end to the-stock and adjusta to difierent ranges.

3. firearm having a depressed stock and an altiscopic sighting tube hinged at its rear end to the stock and ,adjustab e to different ranges and means for securin the sighting tube to the stock in its ifierent adjustments.

4;. A firearm having a depressed stock and a removable altiscopic sightin tube hinged atits rear end to the stock an adjustable to difi'erent ranges and means for securing the a difl'erent adustments.

5;. A firearm having a depressed stock, an altlscoplc sighting tube hinged at its rear end to the stock and means carried by the stock for raising and lowering the front end of the sighting tube to adjust it to difierent ranges.

6. A firearm having a depressed stock, a. removable altiscopic sighting tube hinged at its rearend to the stock and means carried by the stock for raising and lowerin the front end of thesighting tube to a just it to different ranges. I

7. A firearm having a depressed stock, an altiscopic sighting tube hinged. at its rear end to the stock, means carried by the stock forraising and lowering the] front'end of the sighting tube to ad ust it to difierent ranges, and means for securing the sighting tube to the stock in its difi'erent adjustments.

8. A firearm having a depressed stock, a. removable altlscopi'c sighting-tube hinged a't-lts rear end to the stock, means carried by the stock for raising and lowering the front end of the sighting tube to adjust it to v difiierent ranges. and means for securing the 9. A firearm having a depressed stock and its casing an altisco 1c sigh tube hinged thereto and adjusta 1e to Efierent ranges and means for adjusting the s' hting tube comprising a tram of gears wi the easin: and an operating hand wheel at the si e of the casing.

10. A firearm having a depressed stock and its casing, an altiscopie sightin tube hinged thereto and adjustable to di erent lmludthhpamtmhemnelhr means for operating indicator and a common the indicator and adtilbe comprising trams 15 withm th r ng a range jusfiflg the fighting of interconnected gears e and anfiperating hand wheel at the side 0 the casing,

In testimony that we claim the foregoing as our invention we have signed our names 20 this 1st day of m 1916.

J ALES B. HAMILTDN. ALSTON HAMILTON.

five cents call, by mm the W 0! 2mm.

wuhlnmlfl' 

